Model: 990021-1C

Control Transformer Synchro

Special Features:

Round, slotted shaft is tapered 0.025 inches

Properties:

Body Material
Aluminum
Body Style
Standard round a
Pilot Diameter
Between 0.4995 inches and 0.5000 inches
Overall Length
1.7240 inches
Flange Diameter
Between 0.7490 inches and 0.7500 inches
Flange Thickness
Between 0.6100 inches and 0.6630 inches
Undercut Diameter
Between 0.6880 inches and 0.6910 inches
Undercut Width
Between 0.6100 inches and 0.6300 inches
Shaft Diameter
0.0880 inches single shaft and 0.0900 inches single shaft
Shaft Length
0.4100 inches single shaft and 0.4400 inches single shaft
Fragility Factor
Moderately rugged
Body Size
8
Stator Input Voltage Rating In Volts
11.8
Stator Input Current Rating
30.0 milliamperes
Stator Input Electrical Power Rating
211.0 milliwatts
Frequency In Hertz
400.0
Zro Resistance In Ohms
470.00
Zso Resistance In Ohms
81.00
Zrs Resistance In Ohms
590.00
Rotor Dc Resistance In Ohms
365.00
Stator Dc Resistance In Ohms
64.00
Phase Shift Angle In Deg
8.500 input to output
Maximum Total Null Voltage Output In Millivolts Per Volt
60.00
Electrical Error Angular Range In Minutes
-7.0/+7.0
Actuator Friction Torque At Minus 55 Deg Celsius
16.0 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
4.0 centimeter-grams
Shaft Maximum Radial Play
0.0005 inches
Shaft End Play
Between 0.0003 inches and 0.0008 inches
Pilot Length
0.0330 mils and 0.0530 centimeters
Mounting Surface To Terminal End Distance
1.2410 inches
Shaft Maximum Runout
0.0010 inches
Terminal Location
Rear
Plus J Zro Reactance In Ohms
1770.00
Shaft Slot Depth
0.0150 inches single shaft and 0.0350 inches single shaft
Plus J Zso Reactance In Ohms
330.00
Shaft Slot Width
0.0100 inches single shaft and 0.0300 inches single shaft
Plus J Zrs Reactance In Ohms
190.00
Shaft Type
Round, slotted single shaft
Transformation Ratio
2.208 rotor to stator
Shaft End Play Determining Weight
8.0 ounces
Terminal Type And Quantity
5 wire lead
NSN
5990-01-148-3324
Part Number
990021-1C
Description
Synchro,control Transformer
CAGE
82577

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the rotor is dependent upon both the position of the rotor and the electrical input to the stator from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, or variable transformers.

Part 990021-1C NSN 5990-01-148-3324

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15289
FIIG:
A07800
Concept No.:
1
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062120
UFC:
34760
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 9014900000
  • SITC: 87412
  • End Use: Marine engines, parts
  • NAICS: 334511
  • USDA: 1

Freight Class: Parts & accessories for direction finding compasses and other navigational instruments and appliances

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